2172-49-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2172-49-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,7 and 2 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2172-49:
(6*2)+(5*1)+(4*7)+(3*2)+(2*4)+(1*9)=68
68 % 10 = 8
So 2172-49-8 is a valid CAS Registry Number.
InChI:InChI=1/C21H14Cl4O/c22-17-7-1-14(2-8-17)21(13-20(25)26,15-3-9-18(23)10-4-15)16-5-11-19(24)12-6-16/h1-12H,13H2
2172-49-8Relevant articles and documents
"Magic rod" rotaxanes: The hydrogen bond-directed synthesis of molecular shuttles under thermodynamic control
Hannam, Jeffrey S.,Kidd, Timothy J.,Leigh, David A.,Wilson, Andrew J.
, p. 1907 - 1910 (2007/10/03)
(Matrix presented) Peptide [2]- and [3]rotaxanes are assembled in high yields under thermodynamic control using hydrogen bonding interactions and reversible cross olefin metathesis.